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Patryk Sitarek

Data Engineer

Machine Learning

Data Analysis

Data QA

  • Bio
  • Resume
  • Skills
  • About Me
  • Contact
Patryk Sitarek

Data Engineer

Machine Learning

Data Analysis

Data QA

  • Bio
  • Resume
  • Skills
  • About Me
  • Contact
Menu

Resume

Experience
2024 - Present
Data Engineer
Warsaw, Accenture

Design and implement end-to-end ETL processes for BI reporting using Microsoft Fabric and Azure cloud. Enabling Fabric capabilities to users. Developing GenAI applications.

2022 - 2023
Junior QA Data Engineer
Warsaw, BitPeak

Planning and executing data validation processes. Building ETL processes for BI reporting using Azure cloud.

2016
IT Internships
Leipzig, Vitalis GmbH

Internship, during which I was responsible for administering operating systems, database maintenance and managing the internet network.

key Projects
2025
Fabric Costs & Utilization Reporting
Fast-Moving Consumer Goods
I worked on a BI reporting product on the use of Power BI/Fabric platform resources and the resulting costs generated by individual business units.
In addition, we provided formal recommendations and tools to support effective platform management, and introduced new capabilities for the Fabric platform.

The benefits of the project are:
  • Tools providing information on resources used and costs generated
  • New Fabric capabilities enablement
  • Platform management support
2024
Migration to Microsoft Fabric and further development
Fast-Moving Consumer Goods

I worked on migration of a data product for international leader in its industry. The product is a model for tracking user adoption and engagement with Power BI initiatives and products across the organization. On further stages the model has been enriched with data related to the use of Power BI resources.


The benefits of the project are:

  • Increased performance:
    • Power BI reports responsiveness with Direct Lake
    • Processing time reduced from 8 h to 1 h
    • Data availability improved from T–2 days to T–1 day
  • Improved error and fault tolerance
  • Significantly increased data reliability
  • Model enriched with detailed insights about resources used and costs

The solution is fully based on Microsoft Fabric platform, using data pipelines, Python notebooks, data warehouse and direct lake semantic model with Power BI reports.

2024
Recommendation algorithm for supply chain management
Fast-Moving Consumer Goods

The project involved implementing a recommendation algorithm for order splitting (knapsack problem) to optimally divide the order based on product parameters and available transport fleet. The algorithm is used on the wholesale platform of a leading FMCG company worldwide.


The benefits of the project are:

  • Automatic recommendations for freight forwarders that replaced their manual work
  • Optimized transportation resources, reducing shipping costs

The solution is based on knapsack problem algorithm implemented in Python and deployed using Azure Machine Learning.

2024
GenAI-based application for customer service support and automatic review

Preparing a template for an application based on GenAI services, which, based on a chat or telephone conversation, prepares a transcription, a summary, verifies and evaluates the content of the conversation based on guidelines and proposes further actions.

The solution is based on Python with microservices architecture and Azure Cognitive Services.

2023
Building a data warehouse and BI reporting solution for sales data
Payments

I started the project as a Data QA Specialist, but from the very beginning I was fascinated by the role of a Data Engineer. In addition to QA tasks, I built data pipelines and helped with data modeling, eventually becoming the lead Data Engineer.
The product was a data warehouse built in a medallion architecture, designed to enable efficient processing of sales data from sources with limited availability while maintaining high scalability.


The benefits of the project are:

  • Unified data warehouse with aggregated data related to the company's core business. Power BI reports that analyze sales of key products.
  • Instant analysis of sales data that allows to respond to key products and customers.
  • Enabling the building of custom reports based on the data model.

The solution was based on Azure Data Factory and Synapse Analytics services, and serverless computing.

2022
Building a data warehouse for SAF-T reporting
Healthcare

It was my first professional commercial project and first experience with cloud computing. Worked as Data QA, responsible for validating data in the model, ETL processes, and automated validation rules within daily processing.


The benefits of the project are:

  • Centralized data warehouse for Standard Audit File for Tax (SAF-T) reporting
  • Reduced hundreds of hours of manual work by people to a few hours of result verification
  • Minimized the number of errors that required subsequent correction

The technology stack was Azure Cloud: Data Factory, Synapse Analytics with Delta Lake, and SQL Server. Most of the code is Python notebooks and stored procedures.

Certifications
Jan 2026
Microsoft DP-700: Fabric Data Engineer Associate
Microsoft Fabric

This certificate is a good summary of my nearly two years of practical experience with the Fabric platform. The scope covers knowledge of services, solutions, and data engineering skills in Fabric. It includes not only batch processing, but also streaming and platform management.

Certificate
Dec 2024
Microsoft DP-600: Fabric Analytics Engineer Associate
Microsoft Fabric

The certification validates my skills to design, build, deploy, and maintain end-to-end enterprise analytics solutions using Microsoft Fabric and Power BI, including data preparation, semantic modelling, and securing analytics assets.

Certificate
Sep 2023
Microsoft AI-900: Azure AI Fundamentals
Microsoft Azure

The certification demonstrates foundational knowledge of artificial intelligence and machine learning concepts, and how to apply them using Microsoft Azure services.

Certificate
Jan 2023
ISTQB® Certified Tester Foundation Level
Testing

The certification validates that an individual has a solid understanding of core software testing principles, terminology, lifecycle models, test techniques & tools, and test management.

Education
Master of Micro- and Nanotechnology
2021 - 2023
Master of Micro- and Nanotechnology
University of Silesia

Master of Science in Micro- and Nanotechnology. Minors in machine learning and electronic.

Bechelor of Computer Science
2017 - 2021
Bechelor of Computer Science
University of Silesia

Bechelor of Engineering in Computer Science. Minors in algorithms and data structures, database management and machine learning.

2013 - 2017
Technician of Computer Science
ZSOT in Lubliniec

My education in the industry began at a technical school. Today, I don't use any of the tools I was taught there, but I appreciate the foundational knowledge and paradigms I learned there.

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